Rust

don't preserve dict id #127

Job	Run time
Check cargo fmt	49s
cargo check	55s
build with wasm-pack	1m 10s
cargo test (macos)	32s
cargo test (macos-aarch64)	32s
Verify MSRV (Min Supported Rust Version)	4m 54s
Verify Vendored Code	56s
cargo test (win64)	2m 41s
cargo test (amd64)	0s
cargo examples (amd64)	0s
cargo test doc (amd64)	0s
cargo test datafusion-cli (amd64)	0s
clippy	0s
cargo doc	0s
Run sqllogictest with Postgres runner	0s
cargo test pyarrow (amd64)	0s
verify benchmark results (amd64)	0s
check Cargo.toml formatting	0s
check configs.md and ***_functions.md is up-to-date	0s
cargo test hash collisions (amd64)	0s
	12m 29s

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